A Poll Was Administered This Year Asking College Students If

question 3

Essay

A poll was administered this year asking college students if they considered themselves overweight. A similar poll was administered five years ago. Results are summarized below. Has the proportion increased significantly? Let α = 0.05. $$\begin{array}{l}\begin{array} { l l l } &&\text { Number Considered Them selves }\\& \text { Sample Size } & \text { Overweight } \\\text { Present sample } & 300 & 150 \\\text { Previous sample } & 275 & 121\end{array}\end{array}$$

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Definitions:

Economies of Scale

The economic benefits companies achieve through expanding their scale of activity, as the cost for every unit of output falls with the growth in scale.

Income

The financial earnings received by an individual or entity, typically measured over a certain period of time.

Utility-Maximizing

A principle in economics wherein individuals or entities make choices that result in the highest level of satisfaction.

R&D Expenditures

Money spent on research and development activities to innovate and improve products or processes.